Mixing-machine.



H. HACKSTEDDE.

MIXING MACHINE. APPLICATION FILED MAR. 1.6. 1916.

1,290,980. Patented Jan. 14, 1919.

W a Herberiflacksfedde.

Maw-CM Iuvzufok,

,with the bowl and To all wkont it concern Be it known that I, HERBERT HACKSTEDDE,

a citizen of the United States, residingat Cincinnati, Hamilton county, Ohio, have 1n-'.

vented a new and useful mprovement in Mixing-Machines, of whichthe following is a specification. A

This invention is a mixing machine, and is primarily designed for the use of bakers in mixing dough, both bread and cake, and is also capable of use in mixingv butter and sugar.

An important object of the lnventlon is to permit unlimited retarding of the beater without interrupting the operation of the driving mechanism, whereby therevis no splashing of the doughnor injury to the operating mechanism should the beater meet with some obstruction in the dough.

A further object insure the proper relation of the beater to the bowl without involving mental and mechanical operations for the beater, of the beater being brought \mto contact thereby worn andimpaired to the detriment of the dough or other material tion. I

A still further object of the invention is to enable the proper operation of the beater and driving means in opposite directions, whereby care need not be taken to see that the mixer is coupled up to a prime mover in such a manner as to be driven in a single predetermined direction. 1

It is also an object of the invention to provide for gradually starting and also gradually stopping the operation of the beater, thereby to prevent splashing of the dough or other material under treatment.

Another object of the invention is to provide for obtaining d beater speeds, and also to provide for selectively changing the speed of the beater to any of the predetermined s eeds, thereby to adaptthe mixer to materia s of diiferent character, and to obtain the speed at different stages of the mixing operation to provide in combination a laterally l swinging bowl support, a heater depending in fixed vertical relation thereto and a fric tional drive for the gear connections that actuate the beater whereby the power may be applied gradually as no means are pro- Specification of Letters Patent. Application filed larch-18, 1816. Serial No. 84,750.

of the invention is to' the adjustment of whereby there is no possibility undergoing the mixing ac- I lte predetermined desired beater .Pat ented Jan. 14,1919.

tion, to different depths within the batch nrthe bowl; and to provide simple and durable construction and assembla e of the ese various members for securing acilit operation and efiiclency of action.

' ob ects may be attained in the following described manner, as illustrated in the accompanying drawings, in which lgure 1 is a vertical section with parts broken away machine embodymg sectlonion the line H of Fig. 1; Fig. 3 a plan of the hinged bowl supportin ring;

1g. 4 an elevation of a rtlon of t e gear casing showing the H s aped slot for the movement thereinof a pin on the clutch shifting lever; Figs. 5 and 6 pers ective views of the cooperating members tachably engaging the beater with the shaft; Figs. 7 and 8 respective side and end elevations of the friction-clutches.

In the drawings, 1 represents the vertical column supported on the base 2 and surmounted b g 3 wherein journaled in the case driven pulley 13 gears14 and 15 each 9 secured on provided with a friction ring 21 and with a boss 22 wherein th curved cam levers 23 The sleeve 25 loosel between the friction clutches and movable longitudinally on said shaft is formed with either side, for the conextended hub 16 to.

y mounted on shaft 12" J vided for adjusting the beater, when in acof a mixing my Improvements; ig. a transverse the bevel pinion an annular grooye 26 and with tapering ends formovably engaging with and turning the cam levers 23 in an outward direction for the corresponding frictionally engaging clutch members. V

The-intermediate shaft 27 .journaled in the casing is provided withithe pinion 28 and with the differential gears 29 and 31 in engagement with the respective gears 14 and 15 on the drivin shaft. The driven shaft 32 journaled in t e casingis' provided with and the shifting an intermedlate groove 37 formed in sleeve 36. A link 1s pivotallyfconnected at its respective ends with the rear end of the shifting lever and with one leg of the bell crank lever'46 which is pivotall secured to the wall of the easin at a ed oint 47. The rod 48 proje ts laterally rom the other leg of said leverjinto movable-engagement with the annular groove 26' formed in the sleeve 25. A pin 49 projects laterally from the .forward portion of the shifting lever into m'ovable engagement with the H shaped slot 51 which may be formed in theadjacent wall of the casing. The lower wall of the horizontal portlon of said-slot is ,formed'with a curved depression or notch. 52 wherein the pin 49 may be maintained by the gravity of the lever, when in an intermediate longitudinal position with the clutch members for the gear 14 in slight frictional engagement to turn the intermediate shaftand the gears 34-and 35 on the driven shaft sufficiently for bringing the clutch members 40 and 41 thereon into position for engagement with the corresponding clutch members; on the sleeve 36 by means of the longitudinal movement of the shifting lever. .After the engagement of either of the gears 34 or- 35 with the sleeve 36 has been effected in this manner the shifting lever may be moved the pin 49 within one of the H shaped slot 51 for 45 and the bell crank vertically with vertical legs of the actuating the link lever 46. r v

In this manner the sleeve 25 may be moved longitudinally: in eitherof opposite direc tions for gradually effecting thealternate frictional engagement of the corresponding -throughtheir clutch A stationary internal gear 33 and with theloose gears v 42 is pivotally secured at one end of said link .by.

n in either in the slot 51 formaintaining of the gears 34 or 35 with gears 14 and '15 with 'thegdriving' shaft connections therewithl 53is formedin a portion of the casing and the vertical shaft 54 'journaled concentric therewith is provided with the bevel gear 55, in engagement. with the driven collar 56 formed; with the depending eccentric bearin "57 is'sec ured on shaft 54 and the beater sha 58 journaled in'said bearing is provided with a collar 59' and with the pinion 61 in engagement with said internal gear. Said collar isformed with a depend ing le 62 terminating in a horizontal foot y 63 which serves to support {the preferably taper pin 64 in the axial-line of the beater shaft. The .lower portion of the edges of said leg are cut away at an inclined angle to formslanting shoulders 65 adjacent to the said pin. j

The shank 67 of the beater 7 terminates in a lateralboss 68 formed. with a hole 69 J the axial line of the heater for detachably nate in inclined stops 71 adapted to engage with the shoulders I 65 for automaticall locking the heater in operative of opposite directions. 7 An important feature of the present invention resides in the arrangement of the several shafts 12, 37, 32 and 54in the same vertical plane, whereby power is transmitted I from the belt wheel 13 to the shaft 54 with a minimum of twist and tension.

It will also be noted that the drive is through meshed gears which are always'in operation, either idle or driving, wherefore the mixer will operate in either direction thereby avoiding the crossing of the driving beltor other expedient to always drive the mixer in a predetermined direction.

In operation, the

maintain'pln 49 within the recess 52 formed v the sleeve 25 in slight frictional engagement with the cam-lever 23. for engaging the gear 24 toturn the intermediate shaft and also the idle gears 34 and 35.- Sleeve 36 with its clutch bevel pinion33; A,

y osition on the leg of the beater shaft, when it is driven weight of the shifting .lever when in the neutral position serves to 'members may now be alternately engaged with the clutch members on said idle gears by corresponding longitudinal .movements of said lever. The slot 51 permits the shifting/le ver to be moved vertically only after the complete engagement of one or the other the sleeve 36. The said lever may be then moved vertically for alternately engaging the friction cutches ond the driving shaft with the gears 14 an 15.

Successive accelerated speeds may be secured for the shaft 32 and its driven connections as follows: By the engagement of gears 14 and 34 with theirrespective shafts speed is attained through gears the engagement of-gear through gears 14, 29, 31, and 35; by the engagement of gear 15. and the rengagement of gear 34, through gears 15, 31, 28, and 34; and by the rengagementof gear 35 the highest speed may be attained through the gears 15, 31, and 35. r

ither of the friction clutches may be engaged very gradually bv means of the shifting lever and only after one of the positive the lowest clutches has been engaged thereby for avoiding the danger of'breaking any of the driven parts by starting the beater under a load too suddenly, and also to avoid any splashing of the batter out of thebowl. planetary movement of the beater may be obtained in any ordinary manner as by the engagement of a driven pinion with a fixed internal gear as shown or in any other desired manner. The beater may be detach ably engaged with its shaft and maintained out of contact with the bowl and in fixed vertical relation thereto by means of a downward movement of the beaterfor en gaging the pin 64 with the hole 69 and maintaining them in fixed .vertical engagement by the engagement of one of the stops 71 with the corresponding shoulder by a" partial turn of the beater and .there maintained by the yielding resistance of the contents of the bowl when in action. During the lateral movement of the bowl support the latch thereon being farther removed from the hinge swings clear of the leg 9 as shown by the dotted line in Fig. 3 and automatically engages with the catch on le 8 for maintaining the support securely in ateral operative position for the insertion and operation of the beater therein.

Havin fully described my improvements what I c aim as my invention and desire to secure by Letters Patent of the United States 1s:-

1. A mixing machine having a beater driving mechanism therefor including friction members which permit retarding of the beater, and means for varying the friction means.

2. A mixing machine having a beater and driving mechanism therefor including friction members which heater, and means for varying the frictionbetween the friction members when starting and stopping the beater.

mixing machine 'having a beater and driving mechanism therefor including chan e speed gearing having meshed gears for o taining definite speed changes, and a one speed toanother The be and I permit retarding of the friction clutch for gradually changing from Speed. f

5. A mixlng-m-achine having a beater and drivin mechanism including "means for selective y obtaining definite predetermined beater s ually 0 speed.

6-. A mixing machine having a beater and driving mechanism therefor including means for slowly. startin the operation of the beater and gradua ly bringing it up to a predetermined speed.

A mixing machine having a. beater and driving mechanismtherefor including means for slowly startin the operation of the ater and selective ally-to any one of a predetermined plurality of speeds.

8. A mixing. machine having a beater and driving mechanism therefor including angmg fromonespeed to another y bringing it up gradu-' means for. gradually stopping the operation of the beater.

-9. A mixing machinehaving a beater and driving mechanism therefor includin means for gradually starting and gradually stopping the operation of the beater.

mixing machine having a, beater and driving mechanlsm therefor including change speed gearing having meshed gears for obtaining definite speed changes and radually starting and gradually stoppingt e operation of the heater, and also for selectivel the beater gradua ly to any of mined speeds.

11. A mixing machine having a beater, and driving mechanism therefor, including chan e speed gearing having meshed gears capa le of driving operation either direction.

12..A mixing machine having .a bowl, a and means for imparting planetary motion to said beater including selective meshed change speed gears and friction meansto permit retarding of the beater.

a predeter- 13. A mixing machine having a beater,

and driving mechanism therefor including rection.

14. A mixing machine having a beater, and driving mechanism therefor including change speed gearing h-avingmeshed gears and also friction means to permit retarding of the beater.

15. A mixing machine having a bowl, a beater, means for rotating said beater within said bowl, including adriving member, and. change speed gearing-actuated by the driving member and having meshed gears changing the speed of selectively in and friction means to permit unlimited retarding of the beater without interrupting the operation of the driving member.

16. A mixing machine having a bowl, a beater and drivin means for the beater, and means whereby t e beater may be removed and replaced without displacing the bowl or any part of the driving means and in any operative position of the beater.

17. A mixing machine having a bowl a beater, driving means for the beater, an aseparable driving connection between the driving means and the beater, said connection including a slip joint, means permitting successive upward and lateral movement of the beater when disconnecting the same, whereby tlpfbeater may be removed and replaced without displacing the bowl or any part of the driving means.

18. .A mixing machine having a bowl, a beater, driving means for the beater and. a separable driving connection between the driving means and the beater, said connection including an open bottom socket carried by the heater and provided with transverse shoulders at opposite sides of the socket, and

a connecting member associated with the driving means and provided with a pintle rotatably embraced by the socket, there being clearance above the pintle to permit successive upward and lateral movements.

of the'socket to remove the same from the pintle, the socket member and the connecting.

lying corresponding transverse shoulders of the socket member at opposite limits'of ro- 4 twtion .of the socket member to prevent upward movement of the socket member, and said shoulders being clear of each other in the mid position of the socket to permit upward .movement thereof in removing the socket.

HERBERT H'ACKSTEDDE. V

Witnesses:

R. S. CARR, I C. LEONARD. 

